High-isolation array antenna integration for single-chip millimeter-wave FMCW radar

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

By using the second bandgap in mushroom EBG structures, a high isolation can be achieved between transmitting (TX) and receiving (RX) microstrip array antennas integrated with a millimeter-wave single-chip FMCW radar. These EBG structures are much easier to manufacture at millimeter waves as compared to first bandgap mushroom EBG structures. In addition to improving isolation, the EBG structures are also used to reduce radiation-pattern ripples caused by edge diffractions due to surface waves. Experimental validation is performed on antenna level and on radar-system level. For the system-level validation, the antenna arrays have been integrated with a single-chip mm-wave FMCW radar using bond-wire interconnect technology. Measurement results in the 57-64 GHz band show TX-RX isolation of 40 dB, which is 15 - 20 dB better than the isolation between TX and RX arrays without EBG structures. In addition, the radiation pattern ripple caused by edge diffractions is reduced below 3 dB.

LanguageEnglish
Pages5214-5223
JournalIEEE Transactions on Antennas and Propagation
Volume66
Issue number10
DOIs
StatePublished - 1 Oct 2018

Fingerprint

Antenna arrays
Millimeter waves
Radar
Energy gap
Diffraction
Radar systems
Surface waves
Wire
Antennas

Keywords

  • Antenna arrays
  • Antenna isolation
  • EBG
  • FMCW radar
  • Metamaterials
  • Microstrip antennas
  • millimeter-waves
  • Photonic band gap
  • Radar
  • Radar antennas

Cite this

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title = "High-isolation array antenna integration for single-chip millimeter-wave FMCW radar",
abstract = "By using the second bandgap in mushroom EBG structures, a high isolation can be achieved between transmitting (TX) and receiving (RX) microstrip array antennas integrated with a millimeter-wave single-chip FMCW radar. These EBG structures are much easier to manufacture at millimeter waves as compared to first bandgap mushroom EBG structures. In addition to improving isolation, the EBG structures are also used to reduce radiation-pattern ripples caused by edge diffractions due to surface waves. Experimental validation is performed on antenna level and on radar-system level. For the system-level validation, the antenna arrays have been integrated with a single-chip mm-wave FMCW radar using bond-wire interconnect technology. Measurement results in the 57-64 GHz band show TX-RX isolation of 40 dB, which is 15 - 20 dB better than the isolation between TX and RX arrays without EBG structures. In addition, the radiation pattern ripple caused by edge diffractions is reduced below 3 dB.",
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High-isolation array antenna integration for single-chip millimeter-wave FMCW radar. / Adela, B.B.; van Beurden, M.C.; van Zeijl, P.T.; Smolders, A.B.

In: IEEE Transactions on Antennas and Propagation, Vol. 66, No. 10, 01.10.2018, p. 5214-5223.

Research output: Contribution to journalArticleAcademicpeer-review

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